All Questions

Say I have two Map instances in JavaScript (or HashMap in Java, or Dictionary in C#), A and B. I want to synchronize B to A, so that B is a copy of A. I can't copy the reference and I don't want to ...

What's the relationship between the two? Both are for atomic operations. Both results need to be either success, or failure with rollback to original state.

So I have some naive implementation for the following problem: We have a list of objects with action methods that have to be trigger at some value of interest. This value is polled (or is streamed) ...

I have several jobs that run nightly. Generally they work but from time to time they fail. What's the best way for them to report failure? The way that seems obvious to me is to send email. I have ...

Git allows rewriting history, this can be useful when a developer accidentally adds sensitive information. But is it worthwhile to develop an application that stores Git history on an immutable ledger(...

Currently I'm building GUI applications for Linux and they have many dependencies( We ship Raspberry Pi devices with the executable installed on each device). My idea is to create a docker image for ...

When writing tests, I often struggle with a conceptual issue, and maybe I am missing something major here. For many classes, the test writing is straight forward and simple, often tests (and their ...

In my app I have some data to be fetched from the server (a list of recipes). In certain views, only a preview of the recipe is shown--this includes fields like title, rating, and an image of the ...

We are building a backend RESTful service for a workflow builder. The service's responsibilities will be to accept workflow definitions from a frontend and store them in a database. We are trying to ...

I am working on a project to use fingerprint to authenticate the user. I don't want the authentication to be device specific. Hence want to upload the user fingerprint to cloud. I do understand that ...

I am planning to implement tests in my company for our android apps. We have 2-3 apps, 3 developers, 1 QA. I want to have a smooth plan for everyone to start learning how to write tests and use ...

I am building a Data Collection Web Application with Flask and MySQL Database. It is basically a creating a Bill Of Materials for the organization for a new product. Bill of Material in a form looks ...

I want to call SOAP endpoints in browser using Angular/React libraries. Seems like it is possible to do so like shown in the example here. If you have done that please list the problems you have ...

I'm building an Electron app using React. I'm coming from the C# and WPF world and I'm wondering, where should my domain classes go? I understand the concept of components, but what about a class with ...

I have to call a critical API over a network (which makes it unreliable) many number of times in a go, many times a day. If the API fails to respond (timeout) or returns an error (because that server ...

Given the fact that devanagari script which is used in Hindi, Sanskrit and few other languages has 1.It has twelve vowels and thirty five consonants, which can represent unambiguously all sounds the ...

Redux uses a state reducer pattern where essentially you create a pure function that looks like: function reducer (previousState, action) { //... return newState; } This looks similar to ...

We are now in a process of migrating our server-per-client architecture to a multi-tenancy architecture. Everything is in place except for one design issue we are having. We are using a subdomain in ...

I have just started learning about model-driven engineering. But I have a hard time to grasp the different model levels, given software example. Would not the model always be represented in a UML ...

More specifically, how to study competitive programming, but starting with the notes. Some background information: So I am new to programming. I noticed that competitive programming is a lot like ...

I am trying to project all upcoming client visit dates based on a client_initial_date. I have the following fields from database: The Client_initail_date, and first_Date. I have to calculate all ...

From my understanding, parser generators accept as input some form of context-free grammar description. The context-sensitive features are handled during semantic rather than syntactic analysis (...

I have a library that provides access to our content management. It consist of a public ContentService and an internal ContentRepository. The ContentService is public and Dependency injected through ...

We are a fairly new team of 5 devs working on an existing code base to make MVP somewhere in Q2 2020. We do not deliver to production yet but we do demo to stakeholders on our progress. We try to work ...

Every day, there will be a set of new data that I will need to write and update to the database. This set of data can contain 8-10million records. This new set of data comes from Service A and it ...

As far as I know, the DBContext or underlying persistance technology should be only contained inside the Data layer. Also, it feels very wrong to me to have identity package inside the user ...

We have a Java Play Framework Application which we want to scale out into a cluster. The only issue is that there are services ran by the Akka Scheduler once per day, and we don't want these services ...

A potential client is very interested by a VSTO product we developed. However, their IT department is concerned wether they should trust this sofware. Mainly, they are worried it could expose a ...

I'm writing logic for a patchable game, and patching involves modifying multiple files. type UpdateInfo { file string data []byte at int64 } func AtomicUpdate(ui <-chan UpdateInfo) ...

For libraries like NGRX - Actions or NGXS - Actions when creating an action you create an interface or class like so: bar-action.ts export class Foo { static type: string = 'bar-foo'; } // etc ...

We have a text file with extended ascii (words like 'Systèmes' and 'Café'). It is in Google Cloud Storage. Its Content-Type is text/csv. If I download it via the browser UI (https://console.cloud....

In C, global variables are stored with the program code. I.e. the space to hold them is part of the object file (either in the data or bss section), instead of being allocated during execution (to ...

Per the Angular style guide, in my application I have a Shared module and a Core module. I also have 2 feature modules for 2 separate parts of my application. Suppose it's an Orders module and a Forum ...

We are starting our new application in which we using MS SQL DB for all our insert/update/delete/select ie. both SELECT and DML operations. But, soon we will have two different sources. SQL Server ...

Long story short - I would like to make a web application, solely for self-education purposes, that should allow user to add additional functionalities via plugins - just like Jenkins - https://...

I am working on the development of an SDK in Android with Java, In general the user doesn't need to inherit any class of the SDK, so the question is if it is a good practice put by default all classes ...

We have an issue with how the implementation of the Data Access layer (EF6 Includes more specifically), influences the behavior of our Domain layer. A theoretical example to illustrate: Application ...

I have a hardware device connected to the computer and on the hardware device there is 512 bytes of memory for storing parameters. I want to read this data and decode the parameters stored in the ...

I have a code at my local machine, with which I want to call an AWS Lambda function. I have configured AWS API Gateway as doorway to Lambda function, but I am concerned about security when sending ...

I have the following StudentGroup class: public class StudentGroup { [Key] public int Id { get; set; } //the set of peers who will review the work of the StudentGroup [ForeignKey("...

I would like to write something like <byte> ::= <bit>*8 to mean that a <byte> is a sequence of exactly 8 <bit>'s. Is there a way to do this in BNF[1][2] or a widely used ...

At our company, we usually design solutions as an SPA which connects to a redundant backend. We follow either of the patterns below. Clients normally don't care which pattern is followed, as long as ...

The problem is if I use the gtk_widget_set_margin_top(), then I resize the window, the proportion is gone. I wonder if there is any way to set the margin based on the allocated size of a widget, ...

I am working with a custom, fairly simple DSL for specifying how various scripts will be run. The DSL takes the form of config files that are very simple and easy for humans to read. They define what ...

So, somebody at work who is twice as experienced than I am, told us that we must not create ViewModel classes within Web API. (We are using Angular for UI) In his opinion ViewModel is ASP.NET MVC ...

My friends and I are going to work on a project where we are going to build two models, one model for image classification and the other text classification by NLP. The final classification will be ...

I am writing a C# client SDK to a REST Api. This SDK sends JSON-serialized models to the API, and implements a first level of verification of the parameters. If the verification fails, it throws an ...

Technologies : NodeJs, Kafka, Mocha The issue : I have a nodeJS service which given a String returns events with a many data. How can I test this using Mocha ? In a simple scenario the service ...

I have this uncompilable code below, it uses the code in this answer. In it gv means "the old value of a group's name", where a group is a group of clocks, and a clock is a timer or alarm. It ...

I need to have compiled in a single file all the interfaces that extends a particular interface for doing some refactoring work (long story). I'm using Visual Studio 2019, but I didn't find any ...